WFA
White Fused Alumina
Mirror polishing · >99% α-phase
- Al₂O₃
- 99.81%
- Mohs hardness
- 9.0
- True density
- 3.90 g/cm³
- Melting point
- 2250 °C
Product range
Four material families, fully specified
Every grade below is fused or reacted, shaped, separated and classified on our own lines in the Zhengzhou Superhard Materials Industrial Park. Chemistry, physical properties, available sizes and application lists come straight from our production data.
Catalogue
Select a material
GC
Green Silicon Carbide
Wafer slicing · GC800# – GC10000#
- SiC
- ≥99.0%
- Mohs hardness
- 9.5
- Density
- 3.20–3.25 g/cm³
- Grades
- GC800#–GC10000#
PWA
Tabular Alumina
Scratch-free CMP · hexagonal platelets
- Al₂O₃
- 99.72%
- Mohs hardness
- 9
- Passes saved
- 10–20%
- Yield gain
- 10–15%
BFA
Brown Fused Alumina
Tough workhorse · F4 – F320
- Al₂O₃
- 95.0–97.0%
- Microhardness
- HV 1800–2200
- Grit range
- F4 – F320
- Toughness
- Higher than SiC
Side by side
Comparison at a glance
Typical values from our production data. Ask for a batch certificate against your own specification.
| Property | WFA | GC | PWA | BFA |
|---|---|---|---|---|
| Main constituent | Al₂O₃ 99.81% | SiC ≥99.0% | Al₂O₃ 99.72% | Al₂O₃ 95–97% |
| Mohs hardness | 9.0 | 9.5 | 9 | HV 1800–2200 |
| Fe₂O₃ | 0.01% | 0.12% | 0.02% | 0.3% |
| Grain shape | Full, sharp-edged | Hexagonal | Hexagonal platelet | Near-spherical |
| Colour | White | Green | Near-transparent | Brown |
| Size range | F16–F220, micropowder | GC800#–GC10000# | Micropowder | F4–F320 |
| Best for | Mirror polishing, insulation | Slicing hard/brittle stock | Scratch-free CMP | Tough, broad-use work |
Grading
FEPA, JIS and ANSI on the same floor
Multiple production lines produce material to EU FEPA, Japanese JIS and American ANSI grading. Company standards are benchmarked against JIS, with particle uniformity comparable to established Japanese and American brands.
Supply
Ordering and delivery
Packing
Bulk bags and cartons, packed with batch identity retained through to shipping. Packing format can be matched to your receiving process.
Export ready
Goods and technology import/export rights are held directly, so material ships to domestic and overseas customers without an intermediary.
Custom grades
Any listed material can be produced to a customer-specified size or grade rather than only the standard catalogue bands.
Lead time and monthly availability depend on grade and grit band — contact sales with your volume and we will confirm both in writing.
Next step
Send us your specification
Give us the grading standard, particle size band, chemistry limits and monthly tonnage. We will confirm the closest standard grade or quote a custom grade.
- Sales / WhatsApp
- +86 158 3827 8887
- 1161016677@qq.com